Mechanical movement



(No Model.)

A. PAHRNEY.

MECHANICAL MOVEMENT.

\ WVENTUR Patented Mar. 16, 1886.

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ANDREXV FAHRNEY, OF MILLEDGEVILLE, ILLINOIS.

MECHANICAL MOVEMENT.

SPECIFICATION forming part of Letters Patent No. 337,826, dated March 16, 1886.

Application filed December 21, 1885.

To all whom it may concern:

Be it known that 1, ANDREW FAHRNEY, a citizen of the United States, residing at Milled geville, in the county of 'Whiteside and State of Illinois, have invented certain new and useful Improvements in Mechanical Movements; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being bad to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

My invention has reference to certain improvements in mechanical movements, and pertains more especially to certain novel mechanism and the arrangement thereof, whereby the length of stroke of the short end of the lever is increased without any additional expenditure of power or velocity, and also whereby horizontal reciprocal motion can be converted into like motion in a vertical plane, and vice versa, with an increase of power and no loss of movement. This is accomplished by moving the fulcrum of the actuating-lever coincidently with the action of such lever.

In the drawings, Figure 1 is a side elevation of mechanism involving my invention, arranged to exhibit its mode of operation, the extreme position of the actuating-lever, when attached to a horizontal pitman, being shown in dotted lines. Fig. 2 exhibits my invention duplicated, so as to further increase its power. Fig. 3 is a detail plan of the fulcrum D.

A is a wide post, about midway of which is pivoted thereto one end of the oscillating arm B. To the opposite or free end of the arm B is pivoted the weight end 0 of the actuatinglever O.

D is the fulcrum of the lever C, rigidly attached to the side thereof, and consists of a half pulley or circle, and is placed with its straight side D next the weight or short end of the lever C, and with such straight side perpendicular to the lever O. The convex or circular side D of the fulcrum D is provided with two parallel grooves, D and D*, as a path for the bands or chains E and F. The upper end of the band E is firmly attached to the post A, directly above and a suitable distance Serial No. 186,249. (No model.)

from the center of the circular side D of the fulcrum D, and has its opposite end firmly attached to the lower end of the groove D The band F is in like manner, and in like relation to such fulcrum, attached at its lower end to the post A, and at its upper end to the upper end of the groove D.

G represents a pit-man pivotally attached to the power end of the lever O, and can be re ciprocated in either a vertical or horizontal plane. As the power end 0 of the lever O is oscillated the bands E and F will alternately wind and unwind on the convex portion of the fulcrum D, one of such bands winding as the other unwinds. When the power end 0 of the lever O is moved downward, the band E will wind on such fulcrum and lift the latter proportionately, and with it the weight end C of the lever O, and thus increase the length of the movement of such weight end 0. Vhen the power end 0 of the lever O is moved downward, the band F winds on the fulcrum D, and draws the latter, and with it the weight end 0 of the lever O, downward, thus lengthening in an opposite direction the movement of such weight end (3. In these ascending and descending movements of the fulcrum D the free end of the arm B accompanies the pivot-ed end 0 of the lever O, and thus pre serves the regular movement of the latter and furnishes a pivot for the partial rotation of the fulcrum D.

H H are stops for the lever 0 when actuated by a horizontal pitman.

It is obvious that the mechanism described will operate equally well with the post A in a horizontal position, though such mechanism can be more generally utilized in the position shown.

My invention can be very readily applied to the work of pumping water, in which operation the lever O can be actuated either by hand or by the usual pitman of a windmill, or such lever can be readily attached to the pitman of a sewing-machine.

In Fig. 2 the weight end 0 of the lever O is shown attached to the power end 0 of a second lever, O, and the power thus further increased, and such supplemental connection can be carried forward to any desired degree.

The chief advantage of my invention lies in the increased movement given to the weight end 0 of the lever G, from which it results that the fulcrum D can be placed nearer such weight end, and the effect of the power thereby augmented, or the machinery be operated with a less amount of power. The normal oscillation of the weight end 0, supplemented by the movement of the fulcrum D, nearly or quite equals the movement ofthe power end 0 It is obvious that the lever O and fulcrum D will operate with one supporting-band, E, and without the arm B, being supported solely on such band.

What I claim as my invention, and desire to secure by Letters Patent of the United States, is-

1. The combination of the support A, arm B, lever O, fulcrum D, attached to such lever, and band E, substantially as shown, and for the purpose described.

2. The combination of the support A, arm B, lever O, fulcrum D, and bands E and F, substantially as shown, and for the purpose specified.

3. As an improvement in mechanical move- I ments, the combination of a lever, O, a fulcrum, D, attached to such lever and having a convex side, and a band, E, suitably attached at one end to a fixed point and at the other end to such fulcrum, in such manner as to wind and unwind upon the convex side of the latter, substantially as shown, and for the purpose mentioned.

4. As an improvement in mechanical movements, the combination of a lever, O, a fulcrum, D, attached thereto, and a supportingband, E, adapted to wind and unwind upon and move such fulcrum in the oscillation of such lever, whereby the action of the weight ter, whereby such fulcrum is positively drawn alternately in opposite directions in the os cillation of such lever, substantially as shown, and for the purpose specified.

In testimony whereof I affix my signature in presence of two witnesses.

7 ANDREW FAHRNEY.

Vitnesses: WALTER N. HASKELL,

CHAS. H. WOODBURN. 

